Brown Driver Briggs

 Gaba or Geba or Gibeah = "hill"
1. a city in Benjamin, modern 'Jeba', which stands on the top of a
steep terraced hill, six miles or ten kilometres north east of
Jerusalem and three miles or five kilometres from Gibeah, on the
edge of the Wadi Suweinit looking northward to the opposite
village of ancient Michmash, modern 'Mukhmas'